Securities are usually defined as a document with legal force and monetary value issued by a company or a government evidencing ownership of equity (in the case of stocks) or debt obligations (when talking about bonds). The purpose of their issuing is thus two-fold: to raise capital or to borrow money. According to this differentiation in the purpose of their issuing, securities are usually divided into equity and debt securities. It could be said that securities help the economy by making it easier for those with money to find those who need investment capital.
Apart from that, those who buy securities get either ownership in a company (when buying shares) or interest on the money they have borrowed (when buying bonds). Equity holders also enjoy the right to profits and capital gain through the payment of dividends, whereas holders of debt securities receive only interest and repayment of principal regardless of how well the issuer performs financially. Equity securities are usually known as stocks. Debt securities come in the form of debentures, bonds, and commercial papers, depending on their maturity and certain other characteristics.
Bonds may be issued by commercial entities in which case they are known as corporate bonds. They usually pay a fixed rate of interest and are repaid after a fixed period, known as their maturity, for example five, seven, or ten years. Debentures have a long maturity. There are also some highly liquid short-term forms of debt which are referred to as “near cash”. These include treasury bills and certain bills of exchange. When governments or their agencies issue debt securities, they are known as government bonds. Gilts or gilt-edged securities are British government bonds, and in the US they call them treasury bonds.